What would be the best job for an engineering major in the (legal) marijuana industry?

I will be graduating with a nuclear engineering major in 2 semesters, so its time for me to start looking for jobs. I decided to major in nuclear engineering to use the technical knowledge as a tool in diplomacy/policy (think Joint Comprehensive Plan of Action, that sort of thing).

That is still my plan A, but its always a good idea to have backup plans, which is why I ask this question.